Smart Garage Door Opener Remote With External Antenna, Compatible With Amazon Alexa, SmartThings, Control Up To 3 Single Doors(with 2 Door Sensors)

External Antenna: It has an external 2 dBi antenna and can better receive WiFi signals. It can support up to 3 garage doors at the same time. (2 sensors are included in the package. The sensor of the third door needs to be purchased separately)No monthly fee or any other subscription fee! Compatibility Check: It is compatible with more than 200 brands. Please check whether your garage door model is in the compatibility list in "Product guides and documents-User Guide". If you are not sure whether your garage door is compatible, you can do a compatibility test. More Convenient: Remote and Voice Control, just tapping the free Meross app from anywhere with internet access or speaking to your Alexa devices to open and close your garage door. The built-in sound alarm makes closing the door safer, especially for families with children and pets. Precise and Stable: You can check the garage door open/ close operation records through the app. Stay alert by different notification modes such as garage door open/ close status, overtime notification, and overnight notification to remind you to close the garage door. Easy to Install: Installation is much easier than you may think. You can make your garage door smart in just a few simple steps.